Pseuduvaria reticulata

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Pseuduvaria reticulata
Uvaria reticulata.jpg
Botanical illustration of Pseuduvaria reticulata using the synonym Uvaria reticulata
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Pseuduvaria
Species:
P. reticulata
Binomial name
Pseuduvaria reticulata
Synonyms

Mitrephora apertaTeijsm. & Binn.
Mitrephora chrysocarpa(Miq.) Boerl.
Mitrephora diepenhorstii(Teijsm. & Binn.) Teijsm. & Binn.
Mitrephora reticulata(Blume) Hook.f. & Thomson
Mitrephora sumatrana(Miq.) Boerl.
Orophea chrysocarpaMiq.
Orophea diepenhorstii(Teijsm. & Binn.) Scheff.
Orophea reticulata(Blume) Miq.
Orophea sumatranaMiq.
Pseuduvaria diepenhorstiiTeijsm. & Binn.
Uvaria reticulataBlume

Contents

Pseuduvaria reticulata is a species of plant in the family Annonaceae. [2] It is native to Bangladesh, Borneo, Java, the Lesser Sunda Islands, Myanmar and Sumatra. [3] Carl Ludwig Blume, the botanist who first formally described the species under the basionym Uvaria reticulata, named it after the net-like (reticulatus in Latin) pattern of veins on the underside of its leaves. [4] [5]

Description

It is a tree reaching 25 meters in height. The young, yellow-brown to gray branches are densely hairy and also have sparse lenticels. Its elliptical to egg-shaped, slightly leathery leaves are 10-31 by 3–12 centimeters. The leaves have pointed, wedge-shaped bases, or flat bases and tapering tips, with the tapering portion 4-20 millimeters long. The leaves are hairless on their upper and lower surfaces. The leaves have 10-22 pairs of secondary veins emanating from their midribs. Its sparsely to very densely hairy petioles are 3-12 by 1.5-4 millimeters with a broad groove on their upper side. Its Inflorescences occur in groups of 5–20 on branches, and are organized on indistinct peduncles. Each inflorescence has a solitary flower. Each flower is on a densely hairy pedicel that is 7-50 by 0.3-0.8 millimeters. The pedicels are organized on a rachis up to 5 millimeters long that have 2 bracts. The pedicels have a medial, densely hairy bract that is 0.5-1.5 millimeters long. Its flowers are unisexual. Its flowers have 3 triangular sepals that are fused at their base. The sepals are 1-2 by 1–2.5 millimeters. The sepals are hairless on their upper surface, very densely hairy on their lower surface, and hairy at their margins. Its 6 petals are arranged in two rows of 3. The orange to yellow, oval to elliptical, outer petals are 1.5-4 by 1.5-3.5 millimeters with hairless upper and very densely hairy lower surfaces. The orange to yellow, heart-shaped inner petals have a 2-7 millimeter long claw at their base and a 5-10 by 3–5.5 millimeter blade. The inner petals have heart-shaped to flat bases and rounded to pointed tips. The inner petals are hairless to densely hairy on their upper surfaces and densely hairy on their lower surfaces. The inner petals have a distinct M-shaped, smooth gland on their upper surface. Male flowers have 31-62 stamens that are 0.5-0.9 by 0.3-0.7 millimeters. Female flowers have 4-8 carpels that are 1.5-3 by 0.8-1.2 millimeters. Each carpel has 1-14 ovules arranged in two rows. Female flowers can have up to 4 sterile stamens, but they are rare. The fruit occur in clusters of 1–7 on hairless to slightly hairy pedicles that are 12-45 by 1-3 millimeters. The yellow-green to brown, globe-shaped fruit are 10-28 by 8-23 millimeters. The fruit have a 0.1-0.5 millimeter-long, pointed tip. The fruit are smooth, and densely hairy. Each fruit has 6-7 hemispherical to lens-shaped seeds that are 10.5-15 by 5.5-8.5 by 2.5-4 millimeters. The seeds are wrinkly. [6]

Reproductive biology

The pollen of P. reticulata is shed as permanent tetrads. [7] [8]

Habitat and distribution

It has been observed growing in limestone, alluvial and sandstone in forests at elevations of 5–1400 meters. [6]

Related Research Articles

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References

  1. ↑ Verspagen, N.; Erkens, R.H.J.; Daniels, A. (2021). "Pseuduvaria reticulata". IUCN Red List of Threatened Species . 2021: e.T179886950A179886964. doi: 10.2305/IUCN.UK.2021-2.RLTS.T179886950A179886964.en . Retrieved 20 June 2022.
  2. ↑ "Pseuduvaria reticulata (Blume) Miq". Catalogue of Life. Species 2000. n.d. Retrieved August 6, 2021.
  3. ↑ "Pseuduvaria reticulata (Blume) Miq". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved August 6, 2021.
  4. ↑ Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN   9780881926279.
  5. ↑ Blume, Carl Ludwig (1830). Flora Javae nec non Insularum Adjacentium [Flora of Java as well as of the Adjacent Islands] (in Latin). Vol. 2. Brussels: J. Frank. p. 50.
  6. 1 2 Su, Yvonne C.F.; Saunders, Richard M.K. (2006). Monograph of Pseuduvaria (Annonaceae). Systematic Botany Monographs. Vol. 79. American Society of Plant Taxonomists. pp. 1–204. JSTOR   25027955.
  7. ↑ Su, Yvonne C. F.; Saunders, Richard M. K. (2003). "Pollen structure, tetrad cohesion and pollen-connecting threads in Pseuduvaria (Annonaceae)". Botanical Journal of the Linnean Society. 143 (1): 69–78. doi: 10.1046/j.1095-8339.2003.00204.x . ISSN   1095-8339.
  8. ↑ Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202 (202): 1–130. JSTOR   41764703.
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